The default settings for a Core i5-3570K are it will use the 38 multiplier when 1 or 2 cores are active, the 37 multiplier when 3 cores are active and it will use the 36 multiplier when all 4 cores are active. This is an unlocked K CPU so with the appropriate motherboard, you can adjust these CPUs however you like. Many users will overclock them so that the CPU will use the 45 multiplier whether 1, 2, 3 or all 4 cores are active. That's why people pay extra money for the unlocked K series. They are very flexible.

The RealTemp program that is available on TechPowerUp will give you a good idea of how much Turbo Boost your CPU is using. The built in XS Bench test will make 1 core active so you should be able to see close to your maximum multiplier. With any benchmark test, Windows will always be waking up additional cores for background processing so your multiplier will decrease when more than 1 core is active. If you adjust your CPU so it uses the same multiplier then you won't have to worry about this.

At the moment your CPU is not overclocked. It is simply using Intel Turbo Boost which is built into these CPUs.

The default settings for a Core i5-3570K are it will use the 38 multiplier when 1 or 2 cores are active, the 37 multiplier when 3 cores are active and it will use the 36 multiplier when all 4 cores are active. This is an unlocked K CPU so with the appropriate motherboard, you can adjust these CPUs however you like. Many users will overclock them so that the CPU will use the 45 multiplier whether 1, 2, 3 or all 4 cores are active. That's why people pay extra money for the unlocked K series. They are very flexible.

The RealTemp program that is available on TechPowerUp will give you a good idea of how much Turbo Boost your CPU is using. The built in XS Bench test will make 1 core active so you should be able to see close to your maximum multiplier. With any benchmark test, Windows will always be waking up additional cores for background processing so your multiplier will decrease when more than 1 core is active. If you adjust your CPU so it uses the same multiplier then you won't have to worry about this.

At the moment your CPU is not overclocked. It is simply using Intel Turbo Boost which is built into these CPUs.

I am not sure what the Asus Optimal mode does but you can depend on RealTemp to show you what multiplier your CPU is using. Asus had one setting where it sets the multiplier to the same value whether 1, 2, 3 or 4 cores are active. That might be its Optimal setting but I am not sure.

Most users prefer to do their overclocking by adjusting the Turbo Boost values in the bios. With your K CPU, you can adjust these to whatever you like.

I am not sure what the Asus Optimal mode does but you can depend on RealTemp to show you what multiplier your CPU is using. Asus had one setting where it sets the multiplier to the same value whether 1, 2, 3 or 4 cores are active. That might be its Optimal setting but I am not sure.

Most users prefer to do their overclocking by adjusting the Turbo Boost values in the bios. With your K CPU, you can adjust these to whatever you like.

Your CPU is at stock default settings when the Turbo Boost multipliers are set to 38, 38, 37, 36 just like your original screen shot showed. Intel intended for users to use Turbo Boost and they designed their CPUs so the amount of Turbo Boost would constantly vary depending on how many cores are active.

The 3570K is very flexible. With just a few minor adjustments, this same CPU is now running fully loaded with all 4 cores active with a 45 multiplier. That's a lot of extra performance for free.

Unfortunately I never got around to finishing RealTemp 3.80. If I have some time this fall to finish this, I will try to release an official update.

Your CPU is at stock default settings when the Turbo Boost multipliers are set to 38, 38, 37, 36 just like your original screen shot showed. Intel intended for users to use Turbo Boost and they designed their CPUs so the amount of Turbo Boost would constantly vary depending on how many cores are active.

The 3570K is very flexible. With just a few minor adjustments, this same CPU is now running fully loaded with all 4 cores active with a 45 multiplier. That's a lot of extra performance for free.

Unfortunately I never got around to finishing RealTemp 3.80. If I have some time this fall to finish this, I will try to release an official update.

Version 4.00 will be the next official version. I have too many projects and not enough motivation.

You do not need a water cooler to do some basic overclocking. These chips run quite reliably even at some very high temperatures.

Edit - The Turbo Ratio Limits is from another program that I work on called ThrottleStop. It allows me to overclock without having to reboot but you should be able to do the same thing with the Asus AI Suite program.

Pushing the TRL button in ThrottleStop will show you the Turbo Ratio Limits. At the moment, overclocking using ThrottleStop only works on the newer 4th Gen processors. You are better off using AI Suite or overclocking in the bios.

Here is some Prime95 action to warm up the cores.

Do a Google search, you should be able to find lots of information about overclocking your CPU. With my Asus board it was very easy. Increase the turbo multipliers and increase the CPU core voltage. Do lots of testing with Prime95, etc. to make sure your CPU is stable.

Pushing the TRL button in ThrottleStop will show you the Turbo Ratio Limits. At the moment, overclocking using ThrottleStop only works on the newer 4th Gen processors. You are better off using AI Suite or overclocking in the bios.

Here is some Prime95 action to warm up the cores.

Do a Google search, you should be able to find lots of information about overclocking your CPU. With my Asus board it was very easy. Increase the turbo multipliers and increase the CPU core voltage. Do lots of testing with Prime95, etc. to make sure your CPU is stable.

I have the same board. Asus P8Z77-V Pro. I have not used this computer very much lately but it is very stable when set up properly and was easy to overclock with only a few minor adjustments. Other than core voltage, I was able to leave most things on AUTO in the bios.

I have the same board. Asus P8Z77-V Pro. I have not used this computer very much lately but it is very stable when set up properly and was easy to overclock with only a few minor adjustments. Other than core voltage, I was able to leave most things on AUTO in the bios.

Click to expand...

Well our specs are almost same.

Mine is Deluxe instead pro.

I've to buy a cooler due to stock coolers by now, and if I'm going to put a cooler I will put a great cooler like Corsair H110 Water Cooler, seems to be perfect.

I think Asus Optimal mode it's a great goal to OC without complications.

Edit: Yes the BIOS is perfect and very easy to-do things like OC into this... I like this MOBO.

Amazing technology. Thumbs up to Intel for creating CPUs that can take this kind of abuse. Buying a better heatsink allowed me to overclock a little further.

Just for the record, the thermal throttling temperature for the 3570K is not until 105C. I got close to that temp but it still had not started thermal throttling yet. The OK in the RealTemp Thermal Status area confirms that. When this changes to LOG, that means the CPU has started to thermal throttle. Full speed ahead!